<html xmlns:th="http://www.thymeleaf.org">
<html lang="en">

<head th:fragment="static1">
    <meta charset="UTF-8">
    <title>我是common头部1</title>
</head>

<head th:fragment="static3">
    <meta charset="UTF-8">
    <title>我是common头部3</title>
</head>

</html>